Every Christian is called by Christ to make disciples, but not everyone can do it. Christians who just want to occupy a space for the Sunday morning service and live for themselves the remaining 166 hours of the week will never make a disciple for Christ. You have to BE a disciple in order to MAKE a disciple that follows Christ.
So, since you are reading this, I am willing to bet you are not in the shallow end of the Christianity pool. You want to be faithful to Christ. You want to see others grow in their knowledge and walk with Jesus. You believe in mentoring, probably because someone has invested deeply in you. So where do you start?
Jesus started with prayer. Jesus knew how to draw a crowd. But His greatest concern was with a few hand-selected disciples. So, He took 40 days off and went into the wilderness to pray and fast. It is no coincidence that the 40 day event is immediately followed in the Gospel narratives with the calling of the Twelve (See Matthew 4 and Mark 1).
I know you pray. But are you praying with sincerity about who God wants you to mentor? Maybe consider spending 40 days without food in the process (make sure your health insurance has a good hospitalization plan first). Be willing to let the Holy Spirit lead you and you will be amazed at His work in you.
Tomorrow we will look at HOW Jesus mentored His followers. His method was extremely simple. You will be surprised when I unveil it. Be sure to subscribe on the link to the right, so you do not miss this.
Shepherding Well 
How true Jeremy.
To make disciples you must first be one.
I know that what Christ did was invest in lives.
He saw beyond the hidden hurts, the hopelessness and the marked social outcast.
Christ seen what most Christians do not, potential and value, so he invested in that.